lugirin



(No Model.) 2 Sheets-Sheet 1.

H. A. LUGRIN.

- STOP WATCH.

Patented Apr. 5, 1887.

uvvmron ATTORNEYS".

N. PETERS, Fhowulhu m hur. Washington, D. c.

(No Model.) 2 SheetsSheet 2. I H. A. LUGRIN.v

STOP WATCH.

' .No. 3 0,777. Patented Apr. 5, 1887. iga N. PETERS. Phuwumn m hnr. Waslflnglun. D. c.

UNITED STATES PATENT OFFICE.

HENRY A. LUGRIN, OF BROOKLYN, NE? YORK.

STOP-WATCH.

SPECIFICATION forming part of Letters Patent No. 360,777, dated April 5, 1887.

Application filed July 28, 1886. Serial No. 209,275.

To aZZ whom it may concern.-

Be it known that I, HENRY A. LUGRIN, of the city, county, and State of New York, have invented certain new and useful Improvements in Stop-Watches, of which the following is a specification.

This invention relates to an improved stopwatch used for timing purposesin horse-races and similar applications; and the invention consistsof a stop-watch in which the arbor of the fourth Wheel islprovided with a minutelygeared crown-wheel, while a similar crownwheel is applied to the arbor of the center seconds-hand. A toothed cylindrical pinion is interposed between the crown-wheels on the arbor of the center seconds-hand and the arbor of the fourth wheel, said pinion being actuated by suitable mechanism operated by the winding-arbor of the stem or pendant so as to be thrown in or out of mesh with said crownwheels, and produce thereby the starting or stopping of the center seconds.

The invention consists,further, of certain details of construction, which will be fully described hereinafter, and finally pointed outin the claims. 1

In the accompanying drawings, Figure 1 represents a top view of my improved stop Watch, drawn on a larger scale. Fig. 2 is a vertical transverse section of the same on line 00 at, Fig. 1. Fig. 2 is a detail section of the motion-transmitting pinion and crown-wheels, drawn on a still larger scale. Fig. 3 is a detail view of the upper part of the movement, taken from the opposite side and showing the connection of the actuating mechanism with the winding-arbor in the pendant or stem. Fig. 4 is a modified arrangement of the crownwheels and intermediate transmitting-pinion. Fig. 5 is a sectional top view of Fig. 3, and Fig. 6 is a detail side view showing another modified arrangement of the transmitting-pin- 1on.

' Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the arbor of the center seconds-hand, A, which arbor is passed through the hollow arbor B of the center wheel, B, of the watch-movement. The arbor A rests by a shoulder on the facecollar of the hollow arbor B, and carries at the (No model.)

opposite end a crown-wheel, O, which is cut with minute teeth and provided with the usual heart-cam, f, by which the center seconds-hand is returned to zero. The top end of the arbor A of the center seconds-hand, A, is guided in bearings ofa bridge, b, of the movement and acted upon by a spring, Z), (shown in Fig. 2,) by which a certain play is imparted to the arbor A and its crown-wheel O. A minutelytoothed crown-wheel, O, is applied to the end of the arbor 0* of the fourth wheel of the watch movement, the teeth of said crownwheels facing each other.

The crown-wheels G O are at such a distance from each other that a cylindrical pinion, D, may be readily interposed between the same, so as to mesh with both crown-wheels. The pinion D is beveled at that end next to the teeth of the crowirwheels, so as to pass easily and without jarring into mesh with the same. The pinion D is arranged to slide on a fixed pin or axis, at, of a fixed arm, D, and moved along said pin by a fulorumed shifting-lever,

D that engages by its forked end a groove, 0?, of the pinion D. The shifting-lever D' is actuated by the usual double ratchet-wheel, F, usually employed in stopwatohes. The double ratchet-wheel F also actuates the usual returnlever, F, which, in connection with the heartcam f, returns the center seconds-hand to the starting-point. It also operates a stop-lever, F which is pressed against the circumference of the crown-wheel 0 when the center secondshand is to be stopped.

The double ratchet-wheel F is actuated by the arbor a of the winding-pinion, which arbor is pushed in by the pressure on the crown of the stem or pendant, said winding-arbor a pressing on a lever, G, pivoted to the main plate of the movement, as shown in Figs. 3 and 5, so as to move it in downward direction. The arbor (0 passes through the hollow shank of the winding-pinion, which shank turns in suitable bearings, and is provided wit-h a square socket for receiving the square portion of the arbor, as shown in Figs. 3 and 5. This lever engages a pin, g, of a pivoted and spring-actuated lever Gr, applied to the lower plate of the watch-movement, said pin passing through a slot, g, of the top plate of the movement, as shown in Figs. 1 and 5. A spring-actuated pawl, 9 of the lever G, engages the lower part of the double ratchet-wheel F, so as to actuate the same,' and impart thereby, by its upper part, the required motion to the shiftlng, return, and stop levers, as usual in stepwatches.

The first depression of the winding-arbor produces the shifting of the pinion D on the pin (1 by the shifting-lever D and simultaneously therewith the moving away of the return and stop levers F F respectively, from the heart-cam f and the crown-wheel G. The pinion D is moved by the shifting-lever D 1nto mesh with the crown-wheels O and C, and imparts thereby motion to the center seconds hand. The second depression of the wlnding-arbor imparts a slight forward mot1on to the double ratchet-wheel F, and produces the shifting of the pinion D out of meshwith the teeth of the crown wheels, and simultaneously the application of the stop-lever F to the circumference of the crown-wheel C, so as to produce the instant stopping of the center seconds-hand. The next depression of the wlndlng-arbor again moves the double ratchetwheel F and applies the return-lever F to the heart-cam f, so as to return thereby the center seconds-hand to the starting-point.

The timing attachment described may also be worked by any other arbor of the watchmovement, and in case the arbor from which the motion is received rotates in opposite directlon to the arbor of the fourth wheel it regulres the arrangement of two cylindrical pinlons, D D which are placed on an arbor, d, that extends from the crown-wheel G diametrleally across the crown-wheel O, as shown in Fig. 4, said arbor being guided in slotted bear-' ings and acted upon by a lifting and depressing spring, (1 (1 that press on opposite sides of the arbor. The lifting-spring d is raised or loweredby a fulcrumed lever, D so as to produce the unmeshing of the pinions D D with the teeth of the crown-wheels O and O, or the lntermeshing of the same, as the case may be.

Instead of imparting a shifting motion to the intermediate transmitting-pinion, D, as shown in Figs. 1 and 2,the same may be supported on a spring-arm, D, and acted upon by a wedgeshaped lifting-lever, D, so that the pinion is lifted out of gear with the transmitting crownwheel 0 against the tension of a spring-arm, D, as shown in Fig. 5. In this case the crownwheel 0 on the arbor of the quarter-second hand requires to have sufficient play to follow the lifting motion imparted by the lever D to the pinion D, and to be lowered again by the spring I), so that the pinion D and either crown-wheel O are placed either in or out of gear with the crown-wheel O. The lifting or lowering motion of the pinion D is a full equivalent to the laterally-shifting motion of the same, as in both cases the meshing or unmeshing of the crown-wheels with the pinion is obtained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a crown-wheel attaehedto the arbor of the center seconds-hand, a crown-wheel attached to the arbor of the fourth wheel, an intermediate cylindrical pinion capable of meshing with both crownwheels, and a shifting mechanism by which the cylindrical pinion is thrown in or out of mesh with said crownwheels, substantially as set forth.

2. The combination of the spring-pressed arbor of the center seconds-hand, a crownwheel on said arbor, a crown-wheel on the arbor of the fourth wheel, the teeth of which crown-wheel face the teeth of the first crownwheel, an intermediate cylindrical pinion having a tapering end, said pinion being adapted to mesh with the teeth of both crown wheels, and a shifting mechanism by which said pinion may be thrown in or out of gear with said crownwheels, substantially as set forth.

3. The combination of the arbor of the center seconds-hand, a crown-wheel keyed to the same, a crown-wheel on the arbor of the fourth wheel, an intermediate cylindrical pinion meshing with both crown-wheels, said pinion sliding on a fixed post or axis, a shifting-lever engaging said pinion, and a double ratchetwheel actuated by the winding-arbor, whereby the pinion is shifted so as to be thrown in or out of mesh with the crown-wheels, substantially as set forth. I

4. The combination of the winding-arbor, an intermediate lever actuated by the same, a spring-pressed lever pivoted to the top plate of the watch-movement and provided with a pin passing through a slot of said plate into the path of the intermediate lever, and a timing attachment actuated by said windingarbor and intermediate levers so as to produce the starting, stopping, or returning of the center seconds-hand of the same, substantially as set forth. I

5. The combination of a center secondshand, a transmittiuggearing for actuating said hand, a double ratchet-wheel, levers connecting said ratchet-wheel with the transmitting-gearing for starting, stopping, or returning said center seconds-hand, a lever having a springpawl for engaging said double ratchetwheel and a pin, said pin passing through a slot of the top plate of the movement, and an intermediate transmitting lever pivoted to the lower plate of the movement and engaging said pin, and a winding-arbor actuating said intermediate lever and passing through the hollow shank of the winding-pinion, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

HENRY A. LUGR-IN.

\Vitnesses:

PAUL GoErEL, SIDNEY MANN.

IOO 

